#include<stdio.h>
void  swap(int p1,int  p2)
{
	int t;
	t=p1;
	p1=p2;
	p2=t;
}
main()
{
	int a,b;
	printf("a,b=");
	scanf("%d%d",&a,&b);
	swap(a,b);
	printf("a=%d,b=%d\n",a,b);
}




